来自《耶鲁大学开放课程：基础物理 第7集 第7集》

• 
  
  I've had really strong students in my class
  我以前教过一些很厉害的学生
• 
  
  who had nothing to do with any of the sciences,
  但他们的专业跟物理或者化学
• 
  
  physics or chemistry,
  这类理科完全不沾边
• 
  
  which, of course,
  当然
• 
  
  is a great pleasure for me to know.
  我很高兴知道这一点
• 
  
  So, if you go forward into your life's mission,
  那么 如果你们考虑将来的职业
• 
  
  what should you know from the last lecture?
  你们应该从上节课了解到什么
• 
  
  Here's the main point.
  这才是重点
• 
  
  The Law of Conservation of Energy
  能量守恒定律
• 
  
  is a powerful concept that I told you,
  是我告诉过你们的一个重要的概念
• 
  
  survives even the quantum revolution.
  量子革命都没能推翻它
• 
  
  So, it looks like we may ascribe to a system
  那么 我们也许应该给一个系统